SU879615A1

SU879615A1 - Theft protection device

Info

Publication number: SU879615A1
Application number: SU802890593A
Authority: SU
Inventors: Николай Мефодьевич Пафнутьев
Original assignee: Учебная Опытно-Конструкторская Организация Ленинградского Техникума Авиаприборостроения И Автоматики
Priority date: 1980-01-04
Filing date: 1980-01-04
Publication date: 1981-11-07

Description

Изобретение относится к области охранной сигнализации и может применяться для защиты от краж при разбивании вит ринного стекла, например, в ювелирных магазинах, музеях и т.д.The invention relates to the field of burglar alarms and can be used to protect against theft when breaking glass, for example, in jewelry stores, museums, etc.

Известно устройство для тревожной сигнализации, содержащее датчик, реле и блок питания flj.A device for alarm, containing a sensor, relay and power supply flj.

Наиболее близким техническим решением к изобретению является устройство для тревожной сигнализации, содержащее блок питания, соединенный с датчиком И реле £2].The closest technical solution to the invention is a device for alarming, comprising a power supply connected to a sensor AND relay £ 2].

Известные устройства только сигнали10 зируют о факте взлома, но не обеспечивают надежного сохранения ценностей.Known devices only signal the fact of hacking, but do not provide reliable preservation of values.

Целью изобретения является повыше- . ние надежности устройства.The aim of the invention is higher. the reliability of the device.

Поставленная цель достигается тем, что в предложенное устройство введены второе реле и электромагнит. Блок питания подключен через размыкающие контакты первого реле к обмотке второго реле и через замыкающие контакты второго реле соединен с обмоткой электромагнита.This goal is achieved by the fact that the proposed device introduced a second relay and an electromagnet. The power supply is connected through the opening contacts of the first relay to the winding of the second relay and through the closing contacts of the second relay is connected to the winding of the electromagnet.

На чертеже изображена схема устройства для защиты от краж.The drawing shows a diagram of a device for protection against theft.

Устройство содержит блок 1 питания, охранный датчик 2 (например, тензодатчик), первое реле 3 с размыкающими контактами 4, второе реле 5 с замыкающими контактами 6 и электромагнит 7.The device comprises a power supply 1, a security sensor 2 (for example, a load cell), a first relay 3 with NC contacts 4, a second relay 5 with NO contacts 6 and an electromagnet 7.

Устройство работает следующим образом.The device operates as follows.

Блок 1 обеспечивает питание реле 3 через тензодатчик 2 и питание реле 5 через размыкающие контакты 4 реле 3. В исходном состоянии реле 3 включено, а реле 5 выключено и выключен электромагнит 7, так как напряжение питания на него поступает через замыкающие контакты 6 реле 5.Block 1 provides power to relay 3 through a strain gauge 2 and power to relay 5 through the disconnecting contacts 4 of relay 3. In the initial state, relay 3 is turned on, and relay 5 is turned off and off the electromagnet 7, since the voltage is supplied to it through the closing contacts 6 of relay 5.

При разбивании стекла витрины, на котором закреплен тензодатчик 2, происходит отпускание реле 3, которое своими контактами включает реле 5, через контакты которого поступает напряжение на электромагнит 7, а также на устройства звуковой и световой сигнализации.When breaking the glass of the showcase, on which the load cell 2 is fixed, the relay 3 is released, which contacts the relay 5, through the contacts of which the voltage is supplied to the electromagnet 7, as well as to the sound and light signaling devices.

При срабатывании электромагнита 7 втягивается . 'его сердечник, служащий одновременно держателем одной из точек опоры витрины, в результате Чего ценности быстро убираются в недоступное для посторонних место.When the electromagnet 7 is retracted. 'its core, which simultaneously serves as the holder of one of the points of support of the display case, as a result of which the values are quickly removed to a place inaccessible to outsiders.

Экономическая эффективность от использования предложенного устройства определяется указанными выше его техническими преимуществами.The economic efficiency from the use of the proposed device is determined by the above technical advantages.

Claims

The invention relates to the field of burglar alarm and can be used to protect against theft when breaking display glass, for example, in jewelry stores, museums, etc. An alarm device is known that contains a sensor, a relay and a power supply unit 1. The closest technical solution to the invention is an alarm signaling device comprising a power supply unit connected to a sensor and a G2 relay. Known devices only signal the fact of hacking, but do not provide reliable preservation of valuables. The aim of the invention is to increase the reliability of the device. The goal is achieved by introducing a second relay and an electromagnet into the proposed device. The block is connected through the opening contacts of the first relay to the winding of the second relay and through the closing contacts of the second relay is connected to the winding of the electromagnet. The drawing shows a diagram of the device for protection against theft. The device contains a power supply unit 1, a security sensor 2 (for example, a strain gauge), a first relay 3 with opening contacts 4, a second relay 5 with closing contacts 6 and an electromagnet 7. The device operates as follows. Unit 1 provides power to relay 3 through the load cell 2 and the power supply to relay 5 via the disconnecting contacts 4 of relay 3. In the initial state, relay 3 is turned on, and relay 5 is turned off and the electromagnet 7 is turned off, because the supply voltage to it goes through the closing contacts 6 of the relay 5. When breaking the glass of the showcase on which the strain gauge 2 is fixed, the relay 3 is released, which by its contacts turns on the relay 5, through the contacts of which voltage is applied to the 3S electromagnet 7, as well as to the sound and light signaling devices. When the electromagnet 7 is triggered, it turns on. its core, which simultaneously serves as the holder of one of the points of support of the showcase, as a result, lero values are quickly removed to places inaccessible to outsiders. The economic efficiency of using the proposed device is determined by its technical advantages indicated above. An anti-theft device containing a power supply unit connected to a da S and a first relay, characterized in that, in order to increase the reliability of the device, a second relay and an electromagnet are inserted in it, the power supply unit is connected via the break contacts of the first relay to the winding the second relay and through the closing contacts of the second relay is connected to the winding of the electromagnet. . Sources of information taken into account in the examination 1. Author's testimony of the USSR № 517034, cl. Q 08 B 13 / GS, 1975.

2. USSR author's certificate 1 64О345, кп. q О8 В 13 / ОО, 1977 (prototype).

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